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Russians launch the first artificial satellite, Sputnik 1.
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A dog named Laika becomes the first living creature sent from Earth into space, aboard Russia's Spuntnik 2.
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Launch of the first US satellite, Explorer 1.
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Russian probe Luna 3 sends first pictures of the far side of the moon.
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NASA launches a chimpanzee named Ham into space aboard a Mercury Rocket.
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Russian Yuri Gagarin becomes the first person in space in a 108-minute flight in Vostok 1.
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First American in space (Alan Shepard) in Freedom 7.
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First astronaut to orbit the Earth (John Glenn, USA) in Friendship 7.
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NASA's Mariner 2 scans the surface of Venus.
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Soviet cosmonaut Valentina Tereshkova becomes the first woman in space, aboard Vostok 6.
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Soviet cosmonaut Alexei Leonov makes the first space walk.
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Mariner 4 flies by Mars.
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First Moon landing (By Soviet spacecraft Luna 9.
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A fire on the launch pad of Apollo 1 kills three US astronauts.
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First death in space (Soviet cosmonaut Vladimir Komorov).
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Soviet craft Venera 4 lands on Venus.
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First crewed spacecraft to orbit the Moon (Apollo 8).
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US astronaut Neil Armstrong becomes the first person to walk on the Moon.
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Russian rover becomes the first vehicle to drive on the Moon.
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Launch of first space station (The Soviet Salyut 1).
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First space probe to fly by Jupiter (Pioneer 10).
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First space probe to fly by Mercury (Mariner 10).
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First US and Soviet spacecraft docking (Apollo/Soyuz).
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First successful landing on Mars (By space probe Viking 1).
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First Saturn fly-by (Pioneer 11).
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First space shuttle launch (Columbia).
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First Uranus fly-by (Voyager 2).
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Space shuttle Challenger explodes during launch, killing all seven crew.
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Launch of Russian space station Mir.
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First fly-by of Halley's comet (By European space probe Giotto).
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First Neptune fly-by (Voyager 2).
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Space shuttle Discovery launches the Hubble Space Telescope (HST).
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First part of the International Space Station (ISS) launched.
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Mars Climate Orbiter disappears after orbiting Mars.
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Mars Polar Lander disappears, creating further embarrassment for NASA.
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Mir space station abandoned and crashes off the coast of Australia in the Pacific Ocean.
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First tourist in space (Dennis Tito).
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Space shuttle Columbia explodes on re-entry killing all seven astronauts.
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Twin Mars Exploration Rover missions Spirit and Opportunity land on Mars.
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After descending by parachute for 2 hours and 28 minutes, the Huygens probe lands on Saturn's largest moon, Titan.
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A company called SpaceX becomes the first private company to launch a spacecraft to orbit and return it safely to the Earth.
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First Pluto fly-by (New Horizons).